单选题She didn't come to the party last Sunday. ______, she must have made the party more exciting. A. if she came B. Would she come C. Had she come D. Did she come

单选题Who benefited the least from fridges according to the author?

单选题 　　Plastics are materials which are softened by heat and set into lasting form when shaped in a mold. Some are natural; some are semi synthetics as the result of chemical action on a natural substance; some are synthetic, built up from the constituents of oil or coal. All are based on the chemistry of carbon, with its capacity for forming chains. The molecules that compose them (monomers) link together in the setting or curing process to form chains (polymers), which give plastics their flexible strength. Some plastics retain their ability to be softened and reshaped; like wax, they are thermoplastic. Others set permanently in the shapes they are given by heat and pressure; like eggs, they are thermosetting. From industrial beginnings in the 19th century, plastics have struggled through a 120 years of glory, failure, disrepute and suspicion on the slow road to public acceptance. Now, at last, one can positively say that plastics are appreciated and enjoyed for what they are; that they make modern life richer, more comfortable and convenient and also more funny. Plastics are warm materials, sympathetic to the human touch and their transformation into things that come into contact with human beings is entirely appropriate. The fact that there are plastics antiques comes as a shock to most people. How can a material that seems so essential in the 20th century, and one that is so much associated with cheap disposable products, have a history at all? It is a young technology, and a great pan of the fun of collecting plastics is that beautiful pieces of historical interest can still be found very cheaply.

单选题 Although many governments try to convince their respective subjects that atomic energy is an acceptable alternative {{U}} {{U}} 1 {{/U}} {{/U}}the burning of fossil fuels, no government has taken the least trouble to explain the dangers. Maybe they are {{U}} {{U}} 2 {{/U}} {{/U}}them. {{U}} {{U}} 3 {{/U}} {{/U}}the reason, the public must learn by experience, even though this {{U}} {{U}} 4 {{/U}} {{/U}}may be catastrophic. While it is true that nuclear reactors do not produce visible smoke, it is certainly not {{U}} {{U}} 5 {{/U}} {{/U}}that they do not pollute. And the pollution they produce is much more insidious precisely because it is {{U}} {{U}} 6 {{/U}} {{/U}}. {{U}} {{U}} 7 {{/U}} {{/U}}inconvenient it may be for governments to publish all the facts, they have no moral excuse for not doing so, {{U}} {{U}} 8 {{/U}} {{/U}}they think they are acting in our best interest. At least some of the facts are known, even though they are not widely reported. Nuclear reactors produce radioactive water and gases in vast {{U}} {{U}} 9 {{/U}} {{/U}}. What {{U}} {{U}} 10 {{/U}} {{/U}}all this waste? It is {{U}} {{U}} 11 {{/U}} {{/U}}concrete tanks and stored on tank farms. It is {{U}} {{U}} 12 {{/U}} {{/U}}in disused salt mines. It is run into fractured rock. It is buried. It is {{U}} {{U}} 13 {{/U}} {{/U}}about in special trains. But even when dumped, it has to be kept {{U}} {{U}} 14 {{/U}} {{/U}}by sprinklers to stop it from boiling. And the contents of the tanks are, of course, extremely corrosive. The efforts of a fracture in the tank or a failure of the cooling system would be {{U}} {{U}} 15 {{/U}} {{/U}}. While every effort is made to {{U}} {{U}} 16 {{/U}} {{/U}}that radioactive wastes do not escape into the sea or {{U}} {{U}} 17 {{/U}} {{/U}}supplies of drinking water, such a leakage would be too horrible {{U}} {{U}} 18 {{/U}} {{/U}}contemplate. But even then, governments would, presumably continue to belittle the hazards. It seems that {{U}} {{U}} 19 {{/U}} {{/U}}governments can get away with not telling the truth, they will continue to keep silent. Nevertheless the people {{U}} {{U}} 20 {{/U}} {{/U}}to know the full facts. Do you know what happens to the radioactive waste in your country? No? Well—find out!

单选题{{B}}Passage 3{{/B}} Proper arrangement of classroom space is important to encouraging interaction. Most of us have noticed how important physical setting is to efficiency and comfort when we work. Today's corporations hire human engineering specialists and spend a great deal of time and money to make sure that the physical environments of buildings are fit to the activities of their inhabitants. Similarly, college classroom space should be designed to encourage the activity of critical thinking. We will move into the twenty-first century, but step into almost any college classroom and you will step back in time at least a hundred years. Desks are normally in straight rows, so students can clearly see the teacher but not all their classmates. The assumption behind such an arrangement is obvious: everything important comes from the teacher. With a little imagination and effort, unless desks are fixed to the floor, the teacher can correct this situation and create space that encourages interchanges among students. In small or standard-sized classes, chairs, desks and tables can be arranged in different ways: circles, U-shapes, or semicircles. The primary goal should be for everyone to be able to see everyone else. Larger classes, particularly those held in lecture halls, unfortunately, allow much less flexibility. Arrangement of the classroom should also make it easy to divide students into small groups for discussion or problem-solving exercises. Small classes with moveable desks and tables present no problem. Even in large lecture halls, it is possible for students to turn around and form groups of four to six. Breaking a class into small groups provides more opportunities for students to interact with each other, think out hard, and see how other students' thinking processes operate -- all these are the most important elements in developing new modes of critical thinking. In courses that regularly use a small group format, students might be asked to stay in the same small groups throughout the course. A colleague of mine allows students to move around during the first two weeks, until they find a group they are comfortable with. He then asks them to stay in the same seat, with the same group, from then on. This not only creates a comfortable setting for interaction but helps him learn students' names and faces.

单选题Questions 17—20 are based on the following dialogue about Ms. Rowling. You now have 20 seconds to read Questions 17—20.

单选题The extent of a nation's power over its coastal ecosystems and the natural resources in its coastal waters has been defined by two international law doctrines: freedom of the seas and adjacent state sovereignty. Until the mid-twentieth century, most nation favored application of broad open-seas freedoms and limited sovereign rights over coastal waters. A nation had the right to include within its territorial dominion only a very narrow band of coastal waters (generally extending three miles from the shoreline), within which it had the authority, but not the responsibility to regulate all activities. But, because this area of territorial dominion was limited, most nations did not establish rules for management or protection of their territorial. Regardless of whether or not nations enforced regulations in their territorial waters, large ocean areas remained free of controls or restrictions. The citizens of all nations had the right to use these unrestricted ocean areas for any innocent purpose, including navigation and fishing. Except for controls over its own citizens, no nation had the responsibility to control such activities in international waters. And, since there were few standards of conduct that applied on the: "open seas", there were few jurisdictional conflicts between nations. The lack of standards is traceable to popular perceptions held before the middle of this century. By and large, marine pollution was not perceived as a significant problem, in part because the adverse effect of coastal activities on ocean ecosystems was not widely recognized, and pollution caused by human activities was generally believed to be limited to that caused by navigation. Moreover, the freedom to fish, or over fish, was an essential element of the traditional legal doctrine of freedom of the seas that no maritime country wished to see limited. And finally, the technology that later allowed exploitation of other ocean resources, such as oil, did not yet exit. To date, controlling pollution and regulating ocean resources have still not been comprehensively addressed by law. But two recent developments may actually lead to future international rules providing for ecosystem management. First, the establishment of extensive fishery zones, extending territorial authority as far as 200 miles out from a country's coast, has provided the opportunity for nations individually to manage larger ecosystems. This opportunity, combined with national sell-interest in maintaining fish populations, could lead nations to reevaluate policies for management of their fisheries and to address the problem of pollution in territorial waters. Second, the international community is beginning to understand the importance of preserving the resources and ecology of international waters and to show signs of accepting responsibility for doing so. Thus it will become more likely that international standards and policies for broader regulation of human activities that affect ocean ecosystems will be adopted and implemented.

单选题{{B}}Text 3{{/B}} Asked what he would do to improve a government, the ancient Chinese sage Confucius answered that his first measure would be "to correct language". He meant that if words don't mean what they seem to mean people cannot put any plan into action as intended. The state of language at the dawn of the twenty-first century appears to be more confused than ever—thanks in large part to the enormous influence of television, radio, and print media over what we buy, desire, and believe. Benjamin Radford, managing editor of The Skeptical Inquirer magazine, offers hundreds of examples of deceptive practices in journalism, advertising, political activism, public relations, and charity appeals. The real danger to the public, he insists, comes not from outright lies about events or individuals, because in most cases facts can ultimately be proven and mistakes corrected. But the emotional power of images, sound bites, and slogans can exert deep and lasting influence on our opinions and behaviors as consumers, voters, and citizens. The detailed coverage of violent crimes dominating local TV news shows seldom includes any larger context. The cumulative impression left in the minds of viewers is that violent crime is rampant and on the rise. As a result, many people live in fear and many more support the idea of ever-larger police forces, tougher laws, and bigger prisons without considering the actual crime rates in their community or across the nation. Dramatic incidents like the sniper attacks in the Washington D. C. area in the fall of 2002 receive so much media attention that, again, the actual numbers of people affected and the likelihood of such attacks being repeated anywhere else become wildly exaggerated in people's minds. In the media-fueled emotional state following such spectacular disasters, the effort and expense of turning schools into locked fortresses or putting cameras on every street to monitor suspicious individuals can seem insignificant compared to the hope of keeping our children safe from harm. Yet truly effective measures require clear thinking and clearly worded policies that citizens—not only lawyers and politicians—can understand. Too often the long-term future implications of new anticrime laws and policies are not even considered in the rush to feel safer by taking rapid and visible action. Misleading practices by advertisers are another subject of public concern. Governments have long limited ads for alcohol and tobacco products and examined claims by drug companies, carmakers, food suppliers, and toy manufacturers to protect the public health. But advertising uses emotional appeals to shift the viewer's focus away from facts. Viewers who do not take the trouble to distinguish between provable claims and pleasant but meaningless word play end up buying "the sizzle, not the steak" and often paying high.

单选题Questions 11-13 are based on the following dialogue between a student and a librarian.

单选题Why do the less developed countries welcome the multinationals?

单选题WhydidPresidentBushvetothepreviouswarspendingbill?A.BecausetheDemocratssetadeadlinetothewithdrawalofAmericansoldiersinIraq.B.BecausethebillwasproposedbyDemocrats,butBushbelongstotheRepublicanParty.C.Becausethespendingwasnotenough.D.Becausethespendingwastoomuch.

单选题Are you aware that you actually possess six senses? The sixth is a muscular sense (1) for your muscles intelligently to the exact (2) necessary for each action you perform. For example, when you reach (3) an object, the sensory nerves (4) the muscles to the brain and stop your hand at the correct (5) . This automatic perception of the position of your muscles (6) relation to the object is your muscular (7) in action. Muscles are bundles of fibers (8) from one five-thousandth of an inch to about three inches. They have three (9) characteristics: they can become shorter and thicker; they can (10) ; and they can retract to their original positions. (11) a high powered microscope, muscle tissue is seen (12) long, slender cells with a grainy texture like wood. More than half of a person's body is (13) of muscle fibers, most of (14) are involuntary, in other words, work without (15) direction. The voluntary muscles, those that we move consciously to (16) particular actions, (17) more than five hundred. Women have only 60 to 70 percent as much (18) as men for their (19) mass. That is (20) an average woman can't lift as much, throw as far, or hit as hard as an average man.